Networking - Internetworking - Discussion

Discussion :: Internetworking - Internetworking (Q.No.2)

2. 

Routers operate at layer _____. LAN switches operate at layer _____. Ethernet hubs operate at layer _____. Word processing operates at layer _____.

[A]. 3, 3, 1, 7
[B]. 3, 2, 1, none
[C]. 3, 2, 1, 7
[D]. 3, 3, 2, none

Answer: Option B

Explanation:

Routers operate at layer 3. LAN switches operate at layer 2. Ethernet hubs operate at layer 1. Word processing applications communicate to the Application layer interface, but do not operate at layer 7, so the answer would be none.

Pramod said: (May 9, 2014)  
Layer 7 is application layer.

Siddiqueiceiu said: (Jun 2, 2015)  
What is difference between layer 3, layer 2, layer 1?

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